It's a major reorganization.

In order to add FIDO2 support, we need to reorganize some USB/CCID calls to specific area (named driver).
Thus, pico-hsm-sdk has two drivers:
- CCID driver implements APDU over USB/CCID ISO-7816 standard procedures.
- HID driver implements APDU over HID.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>

src/eac.h

@@ -0,0 +1,46 @@
+/*
+ * This file is part of the Pico HSM SDK distribution (https://github.com/polhenarejos/pico-hsm-sdk).
+ * Copyright (c) 2022 Pol Henarejos.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _EAC_H_
+#define _EAC_H_
+
+#include <stdlib.h>
+#include "pico/stdlib.h"
+#include "hsm.h"
+
+typedef enum MSE_protocol {
+    MSE_AES = 0,
+    MSE_3DES,
+    MSE_NONE
+}MSE_protocol;
+
+extern void sm_derive_all_keys(const uint8_t *input, size_t input_len);
+extern void sm_set_protocol(MSE_protocol proto);
+extern MSE_protocol sm_get_protocol();
+extern uint8_t *sm_get_nonce();
+extern int sm_sign(uint8_t *in, size_t in_len, uint8_t *out);
+int sm_verify();
+void sm_update_iv();
+int sm_get_le();
+extern int sm_unwrap();
+int sm_remove_padding(const uint8_t *data, size_t data_len);
+extern int sm_wrap();
+extern bool is_secured_apdu();
+extern uint8_t sm_session_pin[16];
+extern size_t sm_session_pin_len;
+
+#endif